Dukaan joogsi ah oo loogu talagalay qaybaha elektiroonigga ah TLV1117LV33DCYR SOT223

sharaxaad gaaban:

Taxanaha TLV1117LV ee linearegulators-ka hooseeya (LDO) waa nooca korantada hooseysa ee nidaamiyaha korantada ee caanka ah ee TLV1 117.
TLV1117LV waa qalab aad u hooseeya oo isticmalaya 500 jeer ka hooseeya heerka hadda jira ee 11 17 ee korantada, taas oo ka dhigaysa aaladda ku habboon codsiyada ku waajibinaya hadda aad u hooseeya.Qoyska TLV1117LV ee LDOS sidoo kale waxay ku xasilloon yihiin 0 mA ee culeyska hadda jira: ma jiraan shuruudo culeyska ugu yar, sameynta aaladda doorashada ku habboon codsiyada halkaasoo maamulaha uu awood u leeyahay culeysyo aad u yar inta lagu jiro heeganka marka lagu daro qulqulka qulqulka ee amarka 1 A inta lagu jiro nidaamka caadiga ah.TLV1117LV waxay bixisaa xariiq aad u fiican waxayna soo saartaa waxqabadka ku meel gaadhka ah, taasoo keentay hoos u dhac aad u yar iyo kor u kaca tamarta wax soo saarka marka baahida hadda jirta ay ka beddesho wax ka yar 1 MA ilaa in ka badan 500 mA.

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Faahfaahinta Alaabta

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Baadhitaanka saxda ah iyo cod-weyneeye khaladku waxa uu bixiyaa saxsanaanta 1.5%.Saamiga diidmada korontadu aad u sarreyso (PSRR) ayaa awood u siinaya isticmaalka aaladda dib u dhigista ka dib maamulaha beddelka.Astaamaha kale ee qiimaha leh waxaa ka mid ah qaylada wax soo saarka oo hooseeya iyo tvoltage-hooseeya.
Qalabka waxaa lagu magdhabay gudaha si uu u xasilo iyada oo leh 0-Ω u dhigma taxanayaasha iska caabinta (ESR)Faa'iidooyinkan muhiimka ah waxay awood u siinayaan isticmaalka kharash-ku-ool ah, capacitors dhoobada cabbir yar.Capacitors-ka waxtarka leh ee leh danab sare iyo hoos u dhigista heerkulka ayaa sidoo kale la isticmaali karaa haddii la rabo Taxanaha TLV1117LV wuxuu ku jiraa xirmo SOT-223.

Sifooyinka Alaabta

NOOCA	SHARAXA
Qaybta	Wareegyada isku dhafan (ICs) PMIC - Xakamaynta korantada - toosan
Mfr	Qalabka Texas
Taxane	-
Xidhmada	Cajalad & Gariir (TR) Jaran Cajalad (CT) Digi-Reel®
SPQ
Xaaladda Alaabta	Firfircoon
Habaynta wax soo saarka	Wanagsan
Nooca wax soo saarka	go'an
Tirada Nidaamiyeyaasha	1
Voltage - Gelida (Max)	5.5V
Voltage - Soo-saarka	3.3V
Voltage - Wax soo saarka (Max)	-
Korontada ka bixida (Max)	1.3V @ 800mA
Hadda - Wax-soo-saarka	1A
Hadda - Quiescent (Iq)	100 µA
PSRR	75dB (120Hz)
Tilmaamaha Xakamaynta	-
Astaamaha Ilaalinta	Ka badan hadda, ka sarreeya heerkulka
Heerkulka shaqada	-40°C ~ 125°C
Nooca Koritaanka	Dusha sare
Xidhmada / Kiis	TO-261-4, TO-261AA
Xidhmada Aaladda Bixiyaha	SOT-223-4
Lambarka Alaabta Saldhigga	TLV1117

Xakamaynta LDO?

LDO, ama maamule ka tagista hoose, waa nidaamiye toosan oo hooseeya.Tani waxay la xiriirtaa nidaamiyaha toosan ee dhaqanka.Nidaamiyeyaasha tooska ah ee dhaqameed, sida taxanaha 78XX ee chips, waxay u baahan yihiin korantada wax gelinta si ay ugu yaraan 2V ~ 3V ka sarreyso tamarta wax soo saarka, haddii kale, si habboon uma shaqeyn doonaan.Laakiin xaaladaha qaarkood, xaalad noocan oo kale ah waa mid aad u adag, sida 5V ilaa 3.3V, farqiga danab ee u dhexeeya soo-gelinta iyo soo-saarka waa 1.7v oo keliya, taas oo aan buuxin shuruudaha shaqada ee xeeriyeyaasha toosan ee dhaqameed.Iyada oo laga jawaabayo xaaladdan, soo-saareyaasha chip-yada ayaa sameeyay chips beddelka korantada nooca LDO.
LDO waa nidaamiye toosan oo adeegsada transistor ama tuubada saameeynta goobta (FET) ee ka hawlgasha gobolkeeda dheregta si ay u soo saarto danab wax soo saar la habeeyey iyadoo laga jarayo danabka xad-dhaafka ah ee danab gelinta codsiga.Korontada ka daataanku waa faraqa ugu yar ee u dhexeeya danabka wax-soo-gelinta iyo tamarta wax-soo-saarka ee looga baahan yahay maamulaha si uu u ilaaliyo tamarta wax-soo-saarka gudaha 100mV ee ka sarreeya ama ka hooseeya qiimaha magaca.Korantada wax-soo-saarka wanaagsan ee LDO (hoos u dhac) maamulayaasha waxay caadi ahaan adeegsadaan transistor-ka korantada (sidoo kale loo yaqaano aaladda wareejinta) sida PNP.transistor-kan waxa loo ogolyahay in uu buuxsamo sidaa awgeed maamuluhu waxa uu yeelan karaa danab ka bixitaan aad u hooseeya, caadi ahaan ku dhawaad 200mV;Marka la barbardhigo, nidaamiyeyaasha toosan ee caadiga ah ee isticmaalaya NPN transistors koronto ka kooban ayaa hoos u dhac ku yimid qiyaastii 2V.Wax-soo-saarka taban ee LDO wuxuu u adeegsadaa NPN sidii qalabkiisa gaarsiinta wuxuuna ku shaqeeyaa qaab la mid ah aaladda PNP ee soosaarka togan ee LDO.

Horumarka cusubi waxa ay isticmaalaan transistor-ka awooda MOS, kuwaas oo awood u leh in ay bixiyaan danab ka tagida ugu hooseeya.Awoodda MOS, hoos u dhaca tamarta kaliya ee loo maro maamulaha waxaa sababa iska caabinta ON ee hadda culeyska qalabka korontada.Haddii culeysku yar yahay, hoos u dhaca danab ee habkan loo soo saaro waa dhowr iyo toban millivolts oo keliya.
DC-DC macneheedu waa DC ilaa DC (beddelka qiyamka sahayda DC ee kala duwan) iyo qalab kasta oo buuxiya qeexidaan waxaa loogu yeeri karaa beddelaha DC-DC, oo ay ku jiraan LDOs, laakiin ereyada guud waa in la waco aaladaha ay DC-ga ku gaaraan DC beddelashada .
LDO waxay u taagan tahay danab hoose oo hoos u dhaca, kaas oo lagu sharaxay hal cutub: Qiimaha jaban, qaylada hoose, iyo joogitaanka hoose ee joogitaanka hoose (LDO) ee toosan ayaa ah faa'iidooyinkeeda.Waxa kale oo ay u baahan tahay dhawr qaybood oo dibadda ah, sida caadiga ah hal ama laba capacitors bypass.Nidaamiyeyaasha tooska ah ee cusub ee LDO waxay gaari karaan qeexitaannada soo socda: dhawaaqa wax soo saarka ee 30μV, PSRR ee 60dB, iyo quescent current of 6μA (TI's TPS78001 gaaro Iq=0.5uA), iyo hoos u dhac koronto ah oo ah 100mV kaliya (TI mass-produced LDOs) 0.1mV).Sababta ugu weyn ee ay xeer-beegtiyaasha tooska ah ee LDO ay u gaari karaan heerkan waxqabad waa in tuubada hagayaasha ee iyaga ku jira ay tahay P-channel MOSFET, halka xeeriyeyaasha toosan ee caadiga ah ay adeegsadaan transistarrada PNP.MOSFET-ka P-channel waa mid ku shaqeeya korantada oo uma baahna hadda, sidaas awgeed waxa ay aad u yaraynaysaa wakhtiga uu isticmaalo qalabka laftiisa;Dhanka kale, wareegyada leh PNP transistor-ka, ka hortagga PNP Dhanka kale, wareegyada leh transistor-yada PNP, hoos u dhaca danabka u dhexeeya wax-soo-saarka iyo wax-soo-saarka waa inuusan noqon mid aad u hooseeya si looga hortago transistor-ka PNP inuu buuxiyo oo uu yareeyo awoodda wax-soo-saarka;Hoos-u-dhaca danab ee ka dhexeeya P-channel MOSFET wuxuu la mid yahay wax soo saarka hadda iyo iska caabbinta.Maadaama iska caabinta MOSFET ay aad u yar tahay, hoos u dhaca danabku aad buu u hooseeyaa.

Haddii tamarta wax-soo-gelinta iyo wax-soo-saarka ay aad isugu dhow yihiin, waxaa ugu wanaagsan in la isticmaalo nidaamiyaha LDO, kaas oo gaari kara waxtar aad u sarreeya.Sidaa darteed, maamulayaasha LDO waxaa inta badan loo isticmaalaa codsiyada halka tamarta baytari lithium-ion loo rogo danab wax soo saarka 3V.Inkasta oo tamarta batteriga aan la isticmaalin boqolkiiba tobanka ugu dambeeya, maamulaha LDO wuxuu weli xaqiijin karaa wakhti dheer oo batteriga ku shaqeeya oo leh buuq yar.
Haddii tamarta wax-soo-gelinta iyo wax-soo-saarka aysan aad u dhowayn, waa in la tixgeliyo beddelka DCDC sababtoo ah, sida laga arki karo mabda'a sare, soo-gelinta hadda LDO waxay la mid tahay soo-saarka hadda, iyo haddii hoos u dhaca danabku uu aad u weyn yahay. tamarta lagu isticmaalo LDO waa mid aad u weyn oo aan waxtar lahayn.
Beddelayaasha DC-DC waxaa ka mid ah kor u kac, hoos u-socod, kor-u-qaadis/hoos u-socod, iyo wareegyo roga.Faa'iidooyinka beddelayaasha DC-DC waa hufnaan sare, iyo awoodda soo saarista qulqulka sare iyo qulqulka qulqulka hooseeya.Is dhexgalka kordhay, beddeleyaal badan oo cusub oo DC-DC waxay u baahan yihiin oo keliya dhowr inductors dibadda ah iyo capacitors filter.Si kastaba ha ahaatee, garaaca wax soo saarka iyo dhawaaqa beddelka ee kontaroolayaashan ayaa ah mid sarreeya qiimuhuna waa mid aad u sarreeya.
Sanadihii la soo dhaafay, iyada oo la horumarinayo tignoolajiyada semiconductor, inductors dusha sare, capacitors, iyo chips kontoroolka sahayda korantada oo aad isku dhafan ayaa noqday kuwo yar oo ka yar qiimaha.Tusaale ahaan, korantada wax gelinta ee 3V, wax soo saarka 5V/2A ayaa lagu heli karaa iyadoo la isticmaalayo NFET-ka-chip-ka.Marka labaad, codsiyada tamarta yar iyo kuwa dhexdhexaadka ah, qiimaha jaban, baakadaha yaryar ayaa loo isticmaali karaa.Intaa waxaa dheer, haddii inta jeer ee beddelka la kordhiyo 1Mhz, waxaa suurtagal ah in la yareeyo kharashyada iyo isticmaalka inductors iyo capacitors yar yar.Qaar ka mid ah aaladaha cusub ayaa sidoo kale ku dara astaamo badan oo cusub sida bilowga jilicsan, xaddidaadda hadda, PFM, ama xulashada qaabka PWM.
Guud ahaan, doorashada DCDC si kor loogu qaado waa qasab.Lacag ahaan, doorashada DCDC ama LDO waa isbarbardhigga xagga qiimaha, hufnaanta, buuqa, iyo waxqabadka.

Kala duwanaanshaha muhiimka ah

LDO waa nidaamiye toosan oo hooseeya oo awood yar leh kaas oo sida caadiga ah leh buuq u gaar ah oo aad u hooseeya iyo saamiga Diidmada Supply Power (PSRR).
LDO waa jiil cusub oo isku dhafan oo isku dhafan, kaas oo inta badan ka duwan tijaabada in LDO uu yahay nidaamka yar ee chip (SoC) oo leh is-isticmaalka aad u hooseeya.Waxaa loo isticmaali karaa kontoroolka kanaalka ugu weyn ee hadda, chip-ku wuxuu isku daray MOSFET-yada oo leh iska caabin aad u hooseeya oo khadka-iska-caabbinta ah, Schottky diodes, iska caabiyeyaasha muunada, iska caabiyeyaasha kala qaybinta korantada, iyo wareegyada kale ee qalabka, waxayna leedahay ilaalin xad dhaaf ah, heerkul aad u sarreeya. ilaalinta, isha tixraaca saxda ah, amplifier kala duwan, dib u dhac, iwm. PG waa jiilka cusub ee LDO, oo leh wax soo saarka kasta oo gobolka is-imtixaan ah, dib u dhac shaqada sahayda badbaadada ammaanka, sidoo kale waxaa loogu yeeri karaa Power Good, ie "awood wanaagsan ama awood deggan" .

qaab-dhismeedka iyo mabda'a

Qaab-dhismeedka iyo mabda'a ficilka.
Qaab dhismeedka LDO hooseeyo toosan toosan inta badan waxaa ka mid ah wareegga bilowga, unugga eexda isha joogto ah, awood wareegga, qaybaha hagaajinta, isha tixraaca, cod- amplifier qalad, shabakad resistor ah jawaab celin, wareegga ilaalinta, iwm. Mabda'a shaqada aasaasiga ah waa. sida soo socota: nidaamka ayaa kor u kacaya, haddii pin karti uu ku jiro heer sare, wareeggu wuxuu bilaabaa inuu bilaabo, wareegga isha ee joogtada ah wuxuu bixiyaa eexda wareegga oo dhan, iyo korantada isha tixraaca si dhakhso ah ayaa loo aasaasay, wax soo saarku si joogto ah ayuu u kacaa. la galinta marka wax-soo-saarku uu ku dhow yahay inuu gaaro qiimaha la cayimay, koronta jawaab-celinta soo-celinta ee ay heshay shabakadda-celinta waxay sidoo kale ku dhowdahay qiimaha korantada tixraaca, waqtigan cod-weyneeye qaladku wuxuu soo saari doonaa tamarta jawaab-celinta iyo tamarta tixraaca ee u dhexeeya The yar. calaamada qaladka waa la kordhiyey, ka dibna lagu kordhiyey tuubada hagaajinta wax soo saarka, sidaas darteed samaynta jawaab celin taban si loo hubiyo in korantada wax soo saarku ay ku degan tahay qiimaha la cayimay.Sidoo kale, haddii danabka wax-soo-gelinta uu isbeddelo ama hadda wax-soo-saarku is-beddelo, wareegga-xiran wuxuu ilaalin doonaa tamarta wax-soo-saarka oo aan isbeddelin.